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Aquaria/ExternalLibs/ttvfs/VFSDefines.h

101 lines
3.5 KiB
C++

// VFSDefines.h - compile config and basic setup
// For conditions of distribution and use, see copyright notice in VFS.h
#ifndef VFS_DEFINES_H
#define VFS_DEFINES_H
/* --- Config section -- modify as needed --- */
// choose a namespace name, or comment out to disable namespacing completely (not recommended)
#define VFS_NAMESPACE ttvfs
// Define this to allow dealing with files > 4 GB, using non-standard functions.
// This may or may not work with your platform/compiler, good luck.
//#define VFS_LARGEFILE_SUPPORT
// Define this to make all operations case insensitive.
// Windows systems generally don't care much, but for Linux and Mac this can be used
// to get the same behavior as on windows.
// Additionally, this achieves full case insensitivity within the library,
// if the the same files are accessed multiple times by the program, but with not-uniform case.
// (no sane programmer should do this, anyway).
// However, on non-windows systems this will decrease performance when checking for files
// on disk (see VFSLoader.cpp).
#define VFS_IGNORE_CASE
// Define this to make all VFSFile, VFSDir, VFSHelper operations thread-safe.
// If you do, do not forget to add your own implementation to VFSAtomic.cpp/.h !
// If this is not defined, you can still do manual locking if you know what you're doing,
// performance matters, and you implemented actual locking into the Mutex class.
// If no Mutex implementation is provided, its operations are no-ops, beware!
// Note: This adds a *lot* of overhead. Better ensure thread safety yourself, externally. Really!
//#define VFS_THREADSAFE
// By default, ttvfs uses a std::map to store stuff.
// Uncomment the line below to use an (experimental!) hashmap.
// With std::map, iterating over entries will always deliver them in sorted order.
// The hashmap will deliver entries in random order, but lookup will be much faster
// (especially if VFS_IGNORE_CASE is set!)
//#define VFS_USE_HASHMAP
// These are used for small, temporary memory allocations that can remain on the stack.
// If alloca is available, this is the preferred way.
#include <stdlib.h>
#ifdef _WIN32
# include <malloc.h> // MSVC/MinGW still need this for alloca. Seems to be windows-specific failure
#endif
#define VFS_STACK_ALLOC(size) alloca(size)
#define VFS_STACK_FREE(ptr) /* no need to free anything here */
// Fail-safe:
//#define VFS_STACK_ALLOC(size) malloc(size)
//#define VFS_STACK_FREE(ptr) free(ptr)
/* --- End of config section --- */
#ifdef VFS_NAMESPACE
# define VFS_NAMESPACE_START namespace VFS_NAMESPACE {
# define VFS_NAMESPACE_END }
# define VFS_NAMESPACE_IMPL VFS_NAMESPACE::
#else
# define VFS_NAMESPACE_START
# define VFS_NAMESPACE_END
# define VFS_NAMESPACE_IMPL
#endif
VFS_NAMESPACE_START
#ifdef VFS_LARGEFILE_SUPPORT
# if defined(_MSC_VER)
typedef __int64 vfspos;
# else
typedef long long vfspos;
# endif
#else
typedef unsigned int vfspos;
#endif
// simple guard wrapper, works also if VFS_THREADSAFE is not defined
#define VFS_GUARD(obj) VFS_NAMESPACE_IMPL Guard __vfs_stack_guard((obj)->mutex())
// defines for optional auto-locking; only if VFS_THREADSAFE is defined
#ifdef VFS_THREADSAFE
# define VFS_GUARD_OPT(obj) VFS_GUARD(obj)
#else
# define VFS_GUARD_OPT(obj)
#endif
#if defined(_MSC_VER) || defined(__MINGW32__) || defined(__MINGW64__)
# define VFS_STRICMP stricmp
#else
# define VFS_STRICMP strcasecmp
#endif
static const vfspos npos = vfspos(-1);
typedef void *(*allocator_func)(size_t);
typedef void (*delete_func)(void*);
VFS_NAMESPACE_END
#endif